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논문 기본 정보

자료유형
학술저널
저자정보
Hussain, Ali (School of Advanced Material Engineering, Changwon National University) Maqbool, Adnan (School of Advanced Material Engineering, Changwon National University) Malik, Rizwan Ahmed (School of Advanced Material Engineering, Changwon National University) Zaman, Arif (School of Advanced Material Engineering, Changwon National University) Lee, Jae Hong (School of Advanced Material Engineering, Changwon National University) Song, Tae Kwon (School of Advanced Material Engineering, Changwon National University) Lee, Jae Hyun (School of Advanced Material Engineering, Changwon National University) Kim, Won Jeong (Department of Physics, Changwon National University) Kim, Myong Ho (School of Advanced Material Engineering, Changwon National University)
저널정보
한국재료학회 한국재료학회지 한국재료학회지 제25권 제10호
발행연도
2015.1
수록면
566 - 570 (5page)

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$Bi_{0.5}Na_{0.5}TiO_3$ (BNT) based ceramics are considered potential lead-free alternatives for $Pb(Zr,Ti)O_3$(PZT) based ceramics in various applications such as sensors, actuators and transducers. However, BNT-based ceramics have lower electromechanical performance as compared with PZT based ceramics. Therefore, in this work, lead-free bulk $0.99[(Bi_{0.5}Na_{0.5})_{0.935}Ba_{0.065}]_{(1-x)}La_xTiO_3-0.01SrZO_3$ (BNBTLax-SZ, with x = 0, 0.01, 0.02) ceramics were synthesized by a conventional solid state reaction The crystal structure, dielectric response, degree of diffuseness and electric-field-induced strain properties were investigated as a function of different La concentrations. All samples were crystallized into a single phase perovskite structure. The temperature dependent dielectric response of La-modified BNBT-SZ ceramics showed lower dielectric response and improved field-induced strain response. The field induced strain increased from 0.17%_for pure BNBT-SZ to 0.38 % for 1 mol.% La-modified BNBT-SZ ceramics at an applied electric field of 6 kV/mm. These results show that La-modified BNBT-SZ ceramic system is expected to be a new candidate material for lead-free electronic devices.

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